#include <iostream>

const int ArSize = 8;

int sum_arr(int arr[], int n);

int main(...){
	int cookies[ArSize] = {1, 2, 4, 8, 16, 32, 64, 128};

	std::cout << cookies << " = array address, " << sizeof(cookies) << " = sizeof cookies" << std::endl;

	int sum = sum_arr(cookies, ArSize);
	std::cout << "Total cookies eaten: " << sum << std::endl;

	sum = sum_arr(cookies, 3);
	std::cout << "First three eaters  ate: " << sum << std::endl;

	sum = sum_arr(cookies + 4, 4);
	std::cout << "Last four eaters ate " << sum << " cookies.\n";

	return 0;
}

int sum_arr(int arr[], int n){
	int total = 0;
	std::cout << arr << " = arr, " << sizeof(arr) << " = sizeof arr" << std::endl;
	for (int i =0; i < n; i++)
		total += arr[i];
	return total;
}